Yea, comparing Delta Lake to Iceberg is more apt, but I've been shying away from that content cause I don't wanna flamewar. Another poster is asking for this post tho, so maybe I should write it.

I don't really see how Delta vs Hive comparison makes sense. A Delta table can be registered in the Hive metastore or can be unregistered. If you persist a Spark DataFrame in Delta with save it's not registered in the Hive metastore. If you persist it with saveAsTable it is registered. I've been meaning to write a blog post on this, so you're motivating me again.

I've seen a bunch of enterprises that are still working with Parquet tables that aren't registered in Hive. I worked at an org like this for many years and didn't even know Hive was a thing, haha.